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76 lines
3.4 KiB
C++
76 lines
3.4 KiB
C++
/*****************************************************************************************
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* *
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* OpenSpace *
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* *
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* Copyright (c) 2014-2017 *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a copy of this *
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* software and associated documentation files (the "Software"), to deal in the Software *
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* without restriction, including without limitation the rights to use, copy, modify, *
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* merge, publish, distribute, sublicense, and/or sell copies of the Software, and to *
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* permit persons to whom the Software is furnished to do so, subject to the following *
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* conditions: *
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* *
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* The above copyright notice and this permission notice shall be included in all copies *
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* or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, *
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A *
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* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT *
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF *
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* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE *
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* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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****************************************************************************************/
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#ifndef __OPENSPACE_CORE___SCENEGRAPH___H__
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#define __OPENSPACE_CORE___SCENEGRAPH___H__
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#include <vector>
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#include <string>
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namespace openspace {
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class SceneGraphNode;
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class SceneGraph {
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public:
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SceneGraph();
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~SceneGraph();
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void clear();
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bool loadFromFile(const std::string& sceneDescription);
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// Returns if addition was successful
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bool addSceneGraphNode(SceneGraphNode* node);
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bool removeSceneGraphNode(SceneGraphNode* node);
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const std::vector<SceneGraphNode*>& nodes() const;
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SceneGraphNode* rootNode() const;
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SceneGraphNode* sceneGraphNode(const std::string& name) const;
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private:
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struct SceneGraphNodeInternal {
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~SceneGraphNodeInternal();
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SceneGraphNode* node = nullptr;
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// From nodes that are dependent on this one
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std::vector<SceneGraphNodeInternal*> incomingEdges;
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// To nodes that this node depends on
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std::vector<SceneGraphNodeInternal*> outgoingEdges;
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};
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bool nodeIsDependentOnRoot(SceneGraphNodeInternal* node);
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bool sortTopologically();
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SceneGraphNodeInternal* nodeByName(const std::string& name);
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SceneGraphNode* _rootNode;
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std::vector<SceneGraphNodeInternal*> _nodes;
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std::vector<SceneGraphNode*> _topologicalSortedNodes;
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};
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} // namespace openspace
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#endif // __OPENSPACE_CORE___SCENEGRAPH___H__
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